11431312667551 has 32 divisors (see below), whose sum is σ = 13267279872000. Its totient is φ = 9647597599200.

The previous prime is 11431312667447. The next prime is 11431312667569. The reversal of 11431312667551 is 15576621313411.

It is a cyclic number.

It is not a de Polignac number, because 11431312667551 - 2¹¹ = 11431312665503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431312667591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55216890 + ... + 55423528.

It is an arithmetic number, because the mean of its divisors is an integer number (414602496000).

Almost surely, 2^{11431312667551} is an apocalyptic number.

11431312667551 is a deficient number, since it is larger than the sum of its proper divisors (1835967204449).

11431312667551 is a wasteful number, since it uses less digits than its factorization.

11431312667551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207259.

The product of its digits is 453600, while the sum is 46.

The spelling of 11431312667551 in words is "eleven trillion, four hundred thirty-one billion, three hundred twelve million, six hundred sixty-seven thousand, five hundred fifty-one".